package demo2;

import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.stereotype.Repository;
import org.springframework.stereotype.Service;

/*@Repository//数据层*/
//@Service //业务层
//@Controller//控制层
@Component
public class User {
    public void sayHello(){
        System.out.println("Hello!");
    }
}
